John w



(No4 Model.)

J. W.VWILBRAHAM.

STUPFING BOX FOR JOURNALS.

No. 272,819. Patented Feb.20,1883.

. w l .m v Y UNTeD STATES PATENT OFFICE.

HIMSELF, AND THOMAS WILBRAHAM AND JAMES WILBRAHAM, BOTH oF SAME PLACE.

STUFFING-BOX FOR JOURNALS.

SPECIFICATION forming part of Letters Patent No. 272,819, dated February20, 1883. Application filed December 15. 1882. (No model.)

. tion,

The object of my invention is to so construct a stung-box for rotatingshafts that a tight 1o joint can be secured with less pressure on thefollower than in a stufling-box constructed in the ordinary manner,waste of packing being also prevented.

In the accompanying drawings, Figure 1 is a longitudinal section ofparts of the ends-of a cylinder or drum containinga shaft, the journalsof which have to be packed; Fig. 2, an enlarged section of one of thejournals, and Figs. 3, 4, and 5 views illustrating modilications of myinvention.

A A represent. parts of the ends of a cylinder or drum, and B a shaftintended to rotate therein, the journals a of this shaft being adaptedto stutlng-boxes comprising the usual glands,D,followers E,and bolts forsetting up the latter. Ordinarily the pacliiiigwis conned between theinner end of the follower and an nteriial shoulder in the gland D. thepacking being compressed longitudinally between the shoulder and thefollower, and expanded radially so as to bind on the journal oftheshaft. lfind thatthejournalsof sliafis which`liave only a rotatingmovement can be packed more effectively by discarding this plan and foiming a shoulder on the journal itself, against which shoulder thepacking is forced by the follower. Thus, in Figs. l and 2 l have shown agland, D, having a uniform bore throughout, the outer portion ofthejonrnal being adapted to the opening in the follower E, but its innerend having a shoulder, b, so as to tit snugly to the bore of the gland.When pressure is exerted upon the packing :c by the follower, saidpacking is forced against the shoulder b, and a tight joint is insuredWith inuch less pressure onthefollowerthnnin anordinarystnfiingbox.Thefaceottheshoulder b is preferably recessed, so as to increase thesurface of the same and present an indi- 5o rect coni-se for leakage,and that portion d of the journal adjacent to the shoulder b is ta.-

. pered, so as to present a still more extended surface against whichthe packing is pressed when the follower is forced into the gland. Insome cases the shoulder may consist wholly of such a tapered portion ofthe journal, assliown in Fig. 3, or a plain sshoulder on a cylindricaljournal may be used, as shown in Fig. 4, the only thing essential to theinvention being a. shoulder ou the journal, against which the packing ispressed by the follower.

In carrying out my invention I have in soiiie case combined a shoulderedjournal with a gland having an internal shoulder-such, for instance, asthat shown in Fig. 5; but while this construction attains in somemeasure the advantages due to my invention, it is inferior to the plansshown in Figs. 1 to 4, in which the shoulder is formed Wholly on thejournal, and the latter construction is preferred.

Although I have referred to rotating shafts, my invention is equallyapplicable to shafts having a movement of partial rotation.

Besides securing a tight joint with alight pressure on the follower, Iam enabled Io save packing,as there is less wear on the latter than inan ordinary box, and the follower can be set up until all of the packingis exhausted, thc usual waste being prevented.

I claim as my invention- 1. The combination of the gland and follower ofa smiling-box with ajournal having a shoiilder against which thefollower.

2. The com hination ofthe gland and follower of a stufliigbox with ajournal having a rccessed shoulder, against which the packing is forcedby the follower.

3. The combination ofthe glandand follower of a stuffing-box withajournal havingashoulder,b,aiid a tapered portion, d, adjacent thereto,against which the packing is forced by the follower.

In testimony whereofl have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN W. WILBRAHAM.

Witnesses HARRY DRURY, HARRY Saura.

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packing is lorced bythe o

